Ali,, A., Abdallah, A., Abou El-Wafa, S. (2000). PERFORMANCE OF JAPANESE QUAIL FED LOW PROTEIN CORN-SOY DIETS SUPPLEMENTED WITH SYNTHETIC AMINO ACIDS. Journal of Animal and Poultry Production, 25(11), 6721-6729. doi: 10.21608/jappmu.2000.260101
A. M. Ali,; A. G. Abdallah; S. Abou El-Wafa. "PERFORMANCE OF JAPANESE QUAIL FED LOW PROTEIN CORN-SOY DIETS SUPPLEMENTED WITH SYNTHETIC AMINO ACIDS". Journal of Animal and Poultry Production, 25, 11, 2000, 6721-6729. doi: 10.21608/jappmu.2000.260101
Ali,, A., Abdallah, A., Abou El-Wafa, S. (2000). 'PERFORMANCE OF JAPANESE QUAIL FED LOW PROTEIN CORN-SOY DIETS SUPPLEMENTED WITH SYNTHETIC AMINO ACIDS', Journal of Animal and Poultry Production, 25(11), pp. 6721-6729. doi: 10.21608/jappmu.2000.260101
Ali,, A., Abdallah, A., Abou El-Wafa, S. PERFORMANCE OF JAPANESE QUAIL FED LOW PROTEIN CORN-SOY DIETS SUPPLEMENTED WITH SYNTHETIC AMINO ACIDS. Journal of Animal and Poultry Production, 2000; 25(11): 6721-6729. doi: 10.21608/jappmu.2000.260101
PERFORMANCE OF JAPANESE QUAIL FED LOW PROTEIN CORN-SOY DIETS SUPPLEMENTED WITH SYNTHETIC AMINO ACIDS
1Faculty of Environmental Agricultural Sciences, Suez Canal University, Al-Arish, Egypt.
2Department of Poultry Nutrition, Animal Production Research Institute, ARC, Dokki, Egypt.
Abstract
Two experiments were designed using 740 Japanese quail of one-day-old to study the effect of feeding low-protein diets supplemented with amino acids. In Experiment 1, low-protein diets (22% and 20% CP) were supplemented with essential amino acids (Met, Lys, Thr, Iso-Leu, and Val) to meet the recommended requirements (NRC, 1994) and compared with high protein diets (26% and 24% CP, as control diets). In Experiment 2, the same low protein diets used in Experiment 1 (22% and 20% CP) were used in this experiment but supplemented with only Met and Lys and compared with the 24% CP diet as a control diet.
Results of experiment 1 indicated that live body weight, and body weight gain of quail chicks fed the 22% or 20% CP diet were significantly improved when these diets were supplemented with Met, Lys, and Thr and were not significantly different from those fed the high protein diets (24% or 26% CP). However, feed conversion was not significantly affected by reducing CP in the diets. Addition of Iso-Leu and Val did not give any further improvement in either body weight or feed conversion. Adding amino acids (Met., Lys., Thr. and Iso-leu.) to diets containing 20% CP gave the best economic efficiency (E.E) and the reverse was noticed with diets containing either 22% or 20% CP without Iso-leu supplementation. In Experiment 2, body weight and feed conversion of quail chicks fed diets containing 22% or 20% CP supplemented with Met and Lys were not significantly different from those obtained from with the 24% CP diet and increased E.E by 4% and 6%, respectively.
It is concluded that performance of Japanese quail fed low-protein diets (22 or 20% CP) supplemented with amino acids was similar to that achieved with the high-protein diets (26 or 24% CP) and gave the best E.E.
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